Chapter 6 & 7 Flashcards
Water is what?
a solid
a solvent
a dissolver
none of the above
a solvent
Water holding capacity is what?
The ability for soil to hold water
True or False?
Field capacity is the ability of soil to hold water.
True
What is it called when a plant will not revive unless immediately irrigated?
Wilting Point
Water that is held by electrical attraction and is unable to leave the soil is what.
Hygroscopic water
What is the tube used to convey liquid upward called
siphons
Scientific irrigation scheduling is what?
Helps irrigators know exactly when and how much to irrigate crops through a system that monitors weather and soil moisture data.
Aggregate culture is what?
Growing plants in sand
Plants grown in water containing dissolved nutrients, often in combination with fish culture is called what?
Aquaponics
True or False?
Aeroponics are were roots hang in the air and are sprayed with nutrient solution.
True
True or False?
Emitters apply water very slowly in irrigation systems.
True
What is the latest innovation in irrigation systems?
Drip irrigation is the latest invention.
When water runs down between two pant rows it is running through what?
furrows
True or False?
Available water is NOT readily available for plants to use.
False
Hydroponics use up to what percent less water than traditional farming?
15
75
50
95
95%
True or False?
Hydroponics uses soil to grow plants.
False
The yield for hydroponics is what times higher than normal farming?
10
8
4
2
8%
True or False?
Weeds can still happen in hydroponics.
False
Aquaponics uses what animal to help grow produce?
Fish
True or False?
All crops can be grown successfully in hydroponics.
False
True or False?
The rahat system is a form of irrigation.
True
____________ were used to help farmers irrigate fields.
Animals
The moat system involves the use of what?
Chains
Wheels
Pulleys
None of the above
Pulleys
The chain pump system uses what?
Animal power
Solar power
An electric pump
All of the above
an electric pump
True or False?
A level is used in the dhekli system.
True